So I received my T4 yesterday, and as soon as I removed it from the box had my first disappointment. The bottom edge of the screen, where the glass meets the plastic frame has a separation (behind the glass I believe) that creates very noticeable defect. I would imagine on the black version, this might not be visible. It's only aesthetic, but for $1300 my dealer agreed without any hesitation to issue an RMA. So at some point I'll receive a replacement and will send this one back.
So then I hooked up the CAT6, mounted the power box and leveled it nicely. The T4 then has a cleat of sorts that hooks at the back and then has magnets to secure it to the box. Then you use an included small hex driver to secure a captive screw from below to lock it in place. The screw is not optional IMO, as without it you can easily remove the screen off the wall (and could even knock it off the cleat). The magnet is not that strong.
So the second disappointment is that the T4 (at least the 10" version) is quite "flimsy" along the left and right edges. I little bit of touch screen pressure or other small hand forces can easily wiggle it forward and back. If you go a little too far you can even make it disconnect from its pogo-stick type connector on the back and it loses connection to the network temporarily. Now this is not something one would normally do, but again I wasn't really pulling away from the wall that strongly. The T4 in general seems a bit too plasticky and flexible compared to the iPad Mini I had before.
In any case, my dealer says the 8" units he's installed are very sturdy, and I don't doubt it. The 8" unit will have much more of its back surface mounted tightly up against the power box, so much more support. And I can confirm in the central area of the 10" screen, there is very little flex when I touch the screen. But the 10" has several inches on either side where it is cantilevered off the backplate/power box and there is not support between the back of the screen and the wall. I'm now contemplating putting some type of firm rubber or felt behind either side of the screen to act as a cushion to support the edges.
Anyone else have a 10" wall mount that can comment on their experience? Maybe there is something I'm missing or something else is wrong with my unit? The back box and power box are very solid and do not move at all. I really do like the T4 experience though, so I'm still happy I got it. The always on capability and large 10" screen is really nice, and the wife likes it too :-).
Thanks,
Dino